Hardware manual

20
CONTROL ROOM FOLDBACK MONITORING
Signal monitoring buses (per CM16) 1
Number of Channels 4
Internal signal tap points Pre-fader input signal 16
Post-fader input signal 16
Power amplifier output 16
Monitor input Mixed with tap point signal at unity gain
Nominal level +4 dBu
Maximum level +21 dBu
Input impedance 10 kOhm balanced
Configuration Electronically balanced, shield connected to chassis
Common-mode rejection Typical, >50 dB, 20 Hz - 20 kHz, worst case, >40 dB, 20 Hz-20kHz
Output Sum of Monitor input and signal from internal monitor tap point
Frequency response 25 Hz–20 kHz ±0.5 dB
Distortion <0.05% THD @ +4 dBu out
Noise floor -90.5 dB
Nominal level +4 dBu
Maximum level +21 dBu
Output impedance 75 Ohms balanced
Output load 600 Ohms minimum
Configuration Active balanced
Level Adjusts amplitude of signal from tap point
Monitor in to monitor out 0 dB, ±0.5 dB
Control range -95.5 to 0 dB in 0.5 dB steps
CONTACT CLOSURE INPUTS AND OUTPUTS
Inputs 1 discrete input (RLY/TRG IN)
Configuration Single-ended input
Resistance for closure detect <1kOhm max
Resistance for open detect >5 kOhm min
Input Voltage Limit 7.000 VDC maximum
NOTE! “-” input terminal connected to chassis
Output 1 discrete output (RLY OUT)
Configuration Electromechanical relay, dry contacts, floating, C, NC, NO
Steady-state current (max.) 0.5 A
Switched current (max.) 0.25 A
Ground isolation 70 volts maximum
Connector “Phoenix-style” (a.k.a.“Euro-style”) detachable terminal block connectors
NETWORK INTERFACE, 10BASE-T
Physical network Ethernet, IEEE 802.3 compliant
Raw data rate 10 megabits per second
Frame format D.I.X. (Ethernet)
Connector RJ-45 female
Ethernet type 10BASE-T
Cable type CAT-3 (or better) twisted pair
Max cable length 100 m to hub
Grounding Floating
Factory IP Address Supplied on front-panel sticker as shipped from factory
Transport network TCP/IP
Internetwork protocol IP
Transport protocol UDP
Application protocol QSC24
Version 1
Revision 7
Network fail-safe If network connection to the CM16a is lost, operation will continue uninterrupted
RS232 PORT
Cable Type Null-Modem (such as “Laplink”)
Port Settings Bits per Second 9600, Data Bits 8, Parity none, Stop Bits 1, Flow Control Xon/Xoff
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE